@article{Campell2010,
author = {Campell, C. and Lee, J.Z.},
title= {Fertility control in historical China revisited: New methods for an old debate},
year = {2010},
doi = {10.1016/j.hisfam.2010.09.003},
journal = {History of the Family},
volume = {15},
number = {4},
pages = {370--385},
}